JP3039888B2 - Electric coffee kettle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric coffee brewing machine capable of attaching and detaching the outer and inner wraps of a coffee bean crusher.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Application Laid-Open No. 62-64434, for example, there is generally known an electric coffee machine having a coffee bean grinder in which only an inner wall can be removed. In the conventional electric coffee kettle, the inner sheath is removable and can remove the coffee powder remaining on the thin blade part removed from the main body, but the outer sheath is fixed and is cleaned while attached. .

[0003]

In the conventional electric coffee machine, since the outer casing is fixed, it cannot be removed from the main body and it is difficult to clean it. For this reason, there has been a problem that coffee powder remains on the outer blade portion and becomes unsanitary, and the crushing efficiency deteriorates. In addition, when foreign objects such as wood chips are mixed between the outer and inner houses and the movable house is locked, the two houses are strongly engaged with each other. In addition to this, there is a problem that the motor is damaged due to an overcurrent flowing through the motor, and the coffee bean grinder cannot be reused.

[0004]

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises an outer sheath and an inner sheath. The inner sheath is rotated via a rotating shaft by the output of a motor, and the coffee beans are rotated. With a coffee bean crusher that grinds, the inner thread is detachably attached to the lower end of the rotating shaft with a fixing screw,
At the outer case where the outer case is fixed, a plurality of outer case locking pieces, which are fitting portions with the hopper, are provided at a plurality of locations.Similarly, hopper locking pieces are also provided at the hopper, and the locking pieces fit together. The outer case is structured so that it does not drop from the main body.A stopper member is detachably provided on the hopper, and the outer case is fixed in the rotation direction by abutting the stopper member against the side of the outer case locking piece. Rotate the case in the opposite rotation direction to release the case locking piece and the hopper locking piece, remove the case, remove the stopper member from the hopper, and rotate the case in the direction of rotation of the rotating shaft. The outer case is removed by removing the outer case, and both the outer and inner houses are detachably attached to the main body, and an overcurrent protection device connected to the motor is installed inside the main body. It was what was.

[0005]

According to the present invention, after the coffee bean crusher is used, both the outer and inner thinners are removed from the main body, and the coffee powder and the like remaining on the thinner blade portions of the both are cleaned. Further, the outer case is fixed in the rotation direction by abutting the side surface of the case locking piece against the stopper member, and during normal maintenance, the outer case is rotated by rotating the case in the counter-rotating direction of the rotating shaft. Open the case locking piece and the hopper locking piece, remove the thin case, and clean the thin case. In addition, if foreign matter such as wood chips is mixed in, the stopper lock is removed from the hopper and the case is removed by rotating the case in the direction of rotation of the rotating shaft.The case is removed, and the semi-fixed case is removed to remove the foreign matter. do. The overcurrent protection device detects an overcurrent flowing when the motor is locked, and cuts off the current to the motor.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electric coffee machine according to an embodiment of the present invention will be described below with reference to FIGS.

[0007] In the figure, reference numeral 1 denotes an electric coffee kettle body to which a water tank 2 is detachably mounted and which is formed of a soft resin such as ABS resin or PP resin.
A heater unit 4 also having a function of keeping the temperature of the coffee pot 3 mounted on the upper surface side is incorporated in the lower end of the heater. Then, the water in the water tank 2 is guided to the heater unit 4 via a water guide pipe 5 having a check valve 5a,
Here, the temperature is raised by heating.

On the other hand, at the position above the coffee pot 3 of the main body 1, as shown in FIG. 2, an outer sheath 6a forming a stationary light of a coffee bean crusher 6 and an inner sheath 6b forming a rotating light are installed. A coffee powder filter 7 for receiving coffee powder generated by the coffee bean crusher 6 is detachably mounted. The hot water from the heater unit 4 passes through the rising pipe 8, and the coffee liquid extracted from the tip thereof in the coffee powder filter 7 passes therethrough via a drop prevention valve 9 provided at the lower end of the coffee powder filter 7. Down to the coffee pot 3.

The inner sheath 6b is attached to a rotating shaft 11 rotatably supported vertically on a motor support base 10 installed in the main body 1 with an inner seat fixing screw 12;
It is configured to rotate integrally with the rotating shaft 11. A worm wheel 13 is fixed to an upper portion of the rotating shaft 11, and a worm 15a provided on an output shaft 14a of a motor 14 installed substantially horizontally above the main body 1 meshes with the worm wheel 13. The rotation of the motor 14 is reduced through the worm gear 15 including the worm wheel 15a and the worm wheel 13 and transmitted to the inner ring 6b. Reference numeral 16 denotes a hopper for putting coffee beans into the coffee bean crusher 6.

[0010] Here, by rotating the motor 14, the inner sheath 6b is driven to rotate, and the coffee beans in the hopper 16 are ground between the outer sheath 6a and the inner sheath 6b to form coffee powder. The powder is directly dropped and stored in a coffee powder filter 7 below the coffee bean grinder 6.

The motor 14 has a displacement of about 3 mm in the thrust direction of the output shaft 14a.
The worm 15a is fixed to the load side of 4a. Further, in order to constantly urge the amount of movement of the output shaft 14a in the thrust direction to the load, the bearing member 17 and the movable member 18 and the urging member (the above-described embodiment) are urged on the non-load side of the output shaft 14a. In the example, a cylindrical spring 19 is provided. or,
A changeover switch 20 is arranged behind these, and when the output shaft 14a moves to the non-load side in the thrust direction, the operation piece 20a of the changeover switch 20 is operated via the bearing member 17 and the movable member 18.

As shown in FIG. 3, an inner wall 6b of the coffee bean crusher 6 is removably attached to a rotating shaft 11 with a fixing screw 12. The fixing screw 12 is provided with a groove and can be easily removed with a coin-shaped object.

The outer casing 6a is fixed to an outer casing 22 made of a soft resin with an outer fixing plate 23. The outer case 22 and the hopper 16 are provided with outer case locking pieces 22a and hopper locking pieces 16a for fitting at three locations, respectively. The mounting structure of the outer case 22 and the hopper 16 is such that the outer case 22 is pressed against the hopper 16 and the case 2 is removed in the same rotation direction as the rotating shaft 11.
When 2 is rotated, three outer case locking pieces 22a are formed.
And the hopper engaging piece 16a is fitted so that the thin case 22 does not fall from the hopper 16. A hopper 16 is used as a stopper in the same rotation direction as the rotation shaft 11.
A stopper member 24 (having a screw shape in the present embodiment) that contacts the side surface of the outer case locking piece 22a is provided as a stopper in the same rotation direction as the rotating shaft 11 of the outer case 22.

Next, the operation of this embodiment will be described.

When coffee beans are put into the hopper 16 and the motor 14 is rotated, the inner wheel 6b is driven to rotate via the worm gear 15, and is ground by the two beans of the coffee bean grinder 6. At this time, a reaction force is generated when the coffee beans are crushed between both sides, and the reaction force is converted by the worm gear 15 in the thrust direction of the output shaft 14a to move the output shaft 14a to the counter load side. Thereby, as described above, the operation piece 20a of the changeover switch 20 is operated, and the changeover switch 20 is turned on. or,
When the coffee beans are exhausted, there is no reaction force at the time of crushing the coffee beans generated between the two sides of the coffee bean crusher 6, so that the output shaft 14a is urged to the load side by the urging member 19 to be switched. Operation piece 20a of switch 20
Is opened, and the changeover switch 20 is turned off. As described above, the presence / absence of the pulverized material between the two sides of the coffee bean pulverizer 6 can be detected.

When the coffee beans are ground in this structure, a force in the same direction as the rotating shaft 11 is applied to the outer housing 6a, which is a fixed housing, due to the reaction force of the coffee beans when the coffee beans are ground. The light case 22 is fixed. When the coffee beans are not pulverized, the outer case locking piece 22a and the hopper locking piece 16a are opened by rotating the outer case 22 in the counter-rotating direction of the rotating shaft 11, so that the method is easy. Outer house 6a
Can be removed from the main body 1.

When the stopper member 24 is removed from the hopper 16, the outer case 22 is removed from the hopper 1.
6, and the case 22 is rotated in the same rotation direction as the rotating shaft 11. One end of the case 22 is separated by the outer case locking piece 22a and the hopper locking piece 16a.
And the hopper 16 are fitted, but the outer case 22 further rotates because there is no stopper member 24, and the outer case locking piece 22a and the hopper locking piece 16a exceed the fitting range and the locking piece again The case 22 is opened and the outer case 22 is detached from the hopper 16.

As described above, the method of removing the outer housing 6a and the inner housing 6b can be summarized as follows.
By removing the inner wall 6b, the inner wall 6b can also be removed. The outer case 6a removes the inner case 6b and then rotates the outer case 22 in the counter-rotating direction with respect to the rotating shaft 11 to open and remove the outer case locking piece 22a and the hopper locking piece 16a. There are two methods of removing the stopper member 24, rotating the outer case 22 in the same rotational direction as the rotating shaft 11, and opening and removing the outer case locking piece 22a and the hopper locking piece 16a.

The former is a method for easily removing the outer sheath 6a and the inner sheath 6b during normal maintenance, and the latter is a method for removing the inner sheath 6b when the inner sheath 6b is locked by foreign matter such as wood chips.

The latter will be described below. When the light is locked between the outer light 6a and the inner light 6b by foreign matter such as wood chips and the motor 14 is locked, the motor 14 is locked.
An overcurrent flows through the main body 1, and a manual return type overcurrent protection device 25 provided inside the main body 1 operates to protect the motor 14 from damage. At this time, the inner light 6b is driven by reducing the rotation of the motor 14 by the worm gear 15,
A very large torque was transmitted to the inner wheel 6b. As a result, the outer wall 6a and the inner wall 6b are very strongly meshed with each other, so that the inner wall 6b is removed by the former method,
Since the outer case 22 cannot be rotated in the anti-rotation direction of the rotating shaft 11, it is impossible to remove both the outer housing 6a and the inner housing 6b from the main body 1. At this time, by removing the stopper member 24 from the hopper 16,
Is opened in the same rotation direction as the rotating shaft 11, the outer housing 6a and the inner housing 6b, which have been strongly engaged, are loosened.
The hopper engaging piece 16a is opened, and the outer wall 6a and the inner wall 6b can be removed from the main body 1. After that 6
After removing foreign matter from between the inner housing 6a and the inner housing 6b, the outer housing 6a and the inner housing 6b are set on the main body 1 and the overcurrent protection device 2 is set.
By releasing 5, the coffee bean grinder 6 can be reused.

[0021]

As described above, according to the present invention, since both the outer and inner thinners can be detached from the main body, it is possible to easily clean coffee powder and the like remaining on the thinner blades of both thinner and sanitary products. , Can also prevent the reduction of coffee beans grinding efficiency,
Further, the outer case is fixed in the rotation direction by abutting the side surface of the case locking piece against the stopper member, and during normal maintenance, the outer case is rotated by rotating the case in the counter-rotating direction of the rotating shaft. The case locking piece and the hopper locking piece are opened and the outer case is removed together with the outer case.The outer case can be cleaned and the motor can be protected by the overcurrent protection device even if foreign materials such as wood chips are mixed and the case is locked. And
Remove the stopper member from the hopper and rotate the case in the direction of rotation of the rotating shaft to remove the case, remove the semi-fixed case, remove the foreign matter, and then release the overcurrent protection device to remove the coffee. The bean grinder becomes reusable.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of an electric coffee machine according to an embodiment of the present invention.

FIG. 2 is a plan view of the same main part.

FIG. 3 is a sectional view of a coffee bean crusher unit.

[Explanation of symbols]

 6 Coffee Bean Crusher 6a Outer Light 6b Inner Light 11 Rotary Shaft 12 Fixing Screw 14 Motor 16 Hopper 16a Hopper Locking Piece 22 Outer Light Case 22a Outer Light Case Locking Piece 24 Stopper Member 25 Overcurrent Protection Device

Continuation of the front page (56) References JP-A-61-272021 (JP, A) JP-A 62-64434 (JP, U) JP-A 55-161434 (JP, U) (58) Fields investigated (Int) .Cl. ⁷ , DB name) A47J 31/42

Claims (3)

(57) [Claims] 1. A coffee bean comprising an outer shell (6a) and an inner shell (6b), wherein the inner shell (6b) rotates through a rotating shaft (11) by the output of a motor (14) to grind the coffee beans. For electric coffee kettle with crusher (6)
Then, fix the inner wall (6b) at the lower end of the rotating shaft (11).
Removably attach with screws (12) and remove (6a)
The hopper (1) is attached to the outer case (22)
6) the outer case locking piece (22a), which is the fitting portion with
A plurality of hoppers are provided.
A stop piece (16a) is provided, and these locking pieces are fitted and disengaged.
The case (22) does not fall from the body (1)
And outer case locking piece (22a) and hopper locking piece
(16a) The case (22) in which the fittings are released and
By adopting a structure in which the detached housing (6a) is removed , both the housing (6) and the inner housing (6b) can be detachably attached to the main body (1), and further connected to the motor (14) inside the main body (1). The built-in overcurrent protection device (25) has a built-in overcurrent protection device (25) that detects overcurrent flowing when the motor (14) is locked and shuts off power to the motor (14). An electric coffee machine. 2. A stopper member (2) is attached to the hopper (16).
Case 4) is detachably provided, and is fixed in the rotation direction by abutting the side surface of the case locking piece (22a) to be removed with the stopper member (24), and is removed in the direction opposite to the rotation of the rotating shaft (11). 2. A structure in which the case locking piece (22a) and the hopper locking piece (16a) are opened by rotating the (22), the case (22) is removed, and the removal (6a) is removed. Electric coffee kettle. 3. A stopper member (2) is attached to the hopper (16).
4) is detachably provided, and is fixed in the rotation direction by abutting the side surface of the case locking piece (22a) to be removed with the stopper member (24), and the stopper member (24) is removed from the hopper (16) and rotated. 2. An electric coffee machine according to claim 1, wherein the case (22) is detached by rotating the case (22) in the direction of rotation of the shaft (11) to detach the case (6a).